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heartcombo/simple_form

This system is a Ruby gem that provides a flexible, component-based architecture for generating HTML forms in Rails applications. It allows developers to configure and render form inputs, labels, errors, and wrappers with granular control over HTML attributes, CSS classes, and validation states. The library supports multiple template engines and integrates with popular CSS frameworks like Bootstrap and Foundation, while maintaining compatibility across a wide range of Rails versions.

67.9

Adequate · 2 August 2026

3.3k

lines of production code

Ruby

primary language

3

bus factor · 302 authors in all

3

measurements over time

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How it got here

2009 · Component-based architecture and test modernization

The project underwent a significant architectural refactoring to adopt a component-based system for rendering form elements, introducing extensive configuration options and modular classes. Concurrently, the test suite was modernized by migrating to Minitest and adding comprehensive coverage for the new component structure and form helpers.

8 changes

2010–2021 · Component-based architecture and framework modernization

This period focused on refactoring SimpleForm into a modular, component-based architecture, introducing new input types and a flexible wrappers API. The work also modernized the project by adding support for Bootstrap 5 and Foundation 3, updating generators, and expanding test coverage across multiple Rails versions.

13 changes

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About this page

  • The description of this project is derived from its own commit history, not from its README.
  • The score is its highest published measurement, taken on 2 August 2026 at a pinned commit. It is not a live figure and does not change until the project is measured again.
  • Measured at commit 18f38aad0b — the exact code this score is about.
  • Scored under rubric rubric-2026.08.18. Score the same commit under that rubric and you get the same number.
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